/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sshd.common.config.keys.loader.openssh;

import java.util.function.Predicate;

import org.apache.sshd.common.util.GenericUtils;
import org.apache.sshd.common.util.buffer.BufferUtils;

/**
 * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
 */
public class OpenSSHParserContext {
    public static final String NONE_CIPHER = "none";
    public static final Predicate<String> IS_NONE_CIPHER = c -> GenericUtils.isEmpty(c) || NONE_CIPHER.equalsIgnoreCase(c);

    public static final String NONE_KDF = "none";
    public static final Predicate<String> IS_NONE_KDF = c -> GenericUtils.isEmpty(c) || NONE_KDF.equalsIgnoreCase(c);

    private String cipherName;
    private String kdfName;
    private byte[] kdfOptions;

    public OpenSSHParserContext() {
        super();
    }

    public OpenSSHParserContext(String cipherName, String kdfName, byte... kdfOptions) {
        this.cipherName = cipherName;
        this.kdfName = kdfName;
        this.kdfOptions = kdfOptions;
    }

    public String getCipherName() {
        return cipherName;
    }

    public void setCipherName(String cipherName) {
        this.cipherName = cipherName;
    }

    public String getKdfName() {
        return kdfName;
    }

    public void setKdfName(String kdfName) {
        this.kdfName = kdfName;
    }

    public byte[] getKdfOptions() {
        return kdfOptions;
    }

    public void setKdfOptions(byte[] kdfOptions) {
        this.kdfOptions = kdfOptions;
    }

    @Override
    public String toString() {
        return getClass().getSimpleName()
            + "[cipher=" + getCipherName()
            + ", kdfName=" + getKdfName()
            + ", kdfOptions=" + BufferUtils.toHex(':', getKdfOptions())
            + "]";
    }
}
